Inverse Liner Z-Pinch: An Experimental Pulsed Power Platform for Studying Radiative Shocks
Inverse Liner Z-Pinch: An Experimental Pulsed Power Platform for Studying Radiative Shocks
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DOI：
10.1109/tps.2018.2868757
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发表时间：
2018-10
影响因子：
1.5
通讯作者：
T. Clayson;Sergey Lebedev;F. Suzuki-Vidal;G. Burdiak;J. Halliday;J. Hare;J. Ma;L. Suttle;E. Tubman
中科院分区：
文献类型：
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作者：
T. Clayson;Sergey Lebedev;F. Suzuki-Vidal;G. Burdiak;J. Halliday;J. Hare;J. Ma;L. Suttle;E. Tubman
我们提出了一个新的实验平台，用于研究辐射冲击使用“逆线性z箍缩”配置。该平台在英国帝国理工学院伦敦的MAGPIE脉冲功率装置（~1 MA，上升时间~240 ns）上进行了测试。电流通过嵌入低密度气体填充物中的薄壁金属管（衬垫）放电，并通过中心柱返回。内衬内部产生的磁压力以约10 km/s的速度向气体填充物发射了圆柱对称的膨胀辐射激波。这个实验平台提供了良好的诊断访问，允许多帧光学自发射成像，激光干涉测量，和光发射光谱被派上用场。氩气填充最初在0.04毫克/厘米3的实验结果，展示了成功的生产圆柱对称，膨胀冲击表现出辐射效应，如辐射前体的形成。
We present a new experimental platform for studying radiative shocks using an “inverse liner z-pinch” configuration. This platform was tested on the MAGPIE pulsed power facility (~1 MA with a rise time of ~240 ns) at Imperial College London, U.K. Current is discharged through a thin-walled metal tube (a liner) embedded in a low-density gas-fill and returned through a central post. The resulting magnetic pressure inside the liner launched a cylindrically symmetric, expanding radiative shock into the gas-fill at ~10 km/s. This experimental platform provides good diagnostic access, allowing multiframe optical self-emission imaging, laser interferometry, and optical emission spectrography to be fielded. Results from experiments with an Argon gas-fill initially at 0.04 mg/cm3 are presented, demonstrating the successful production of cylindrically symmetric, expanding shocks that exhibit radiative effects such as the formation of a radiative precursor.